1. You say that Sirius might be the sun’s binary companion. At a distance of 8.2 light years, doesn’t that seem a bit far away to be the right candidate? Would a star of the Alpha Centauri system, being closer, not be more suitable? And if Sirius were the companion, wouldn’t its 'dance' with the sun affect the stars of the Alpha Centauri system and their proper motion as seen by us? Conversely, would the Alpha Centauri system disrupt the Sun-Sirius system, given the huge separation between them?

2. If, on the other hand, Sirius is not the companion, but a brown dwarf is, can you comment on the fact that the WISE or IRAS searches have not turned up such a companion?

3. If it can be proved conclusively that the sun is not, after all, a binary, but a single star, would you then accept the current luni-solar theory as being the correct one to explain precession?